Wringing machine



Jan. 1, 1935. P. E. HARRISON ET AL 1,936,434

WRINGING MACHINE Filed Oct. ,1, 1932 3 Sheets-Sheet l ,Fig. 1

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1935- P. E. HARRISON ET AL 1,986,434-

WRINGING MACHINE Filed Oct. 1, 1932 5 Sheets-Sheet 2 9W2 (jC/ ZMOTZJNVENTORS U 2 A TTORNEY.

Jan. 1, 1935; P so AL 1,986,434

WRINGING MACHINE Filed Oct. 1, 1932 5 Sheets-Sheet 3 J/d/f/LOJm NVENTORS (1/2 VJ/uif,

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Patented Jan. 1,1935 I I I UNITED STATES "PATENT OFFlCE WRINGING MACHINE Paul E. Harrison, Donelson, and Ira V. Hitt, Old Hickory, Tenn., assignors to Du Pont Rayon Company, New York, N. Y., a corporation of Delaware Application October 1, 1932, Serial No. 635,744 1 Claims. (01. 210-71) This invention relates to a means and method character; 11 are portions of the frame projectfor the centrifuging of objects and especially of ing outwardly from the pedestal; 12 is an annuannular objects, such as cakes of yarn, filaments, lar bearing race mounted on the frame; 13 are cord, ribbon, or the like. The invention will be bearings operating in the race; 14 are supports described in its application to centrifugal wringmounted in the frame portions 11; 15 is a ring- 5 ing of wet cakes of regenerated cellulose thread, shaped housing carried by supports 14; 151 is a but this description is adopted for purposes of cover forming a removable part of housing 15; 16 facility only and is not a limitation of the invenis an annular opening extending completely tion. around a base of the housing; 20'is a turntable In the manufacture of artificial threads by the mounted on bearings 13; 21 i an annular ring 10 viscose process wherein the freshly formed removably mounted as by bolts 22 on turntable threads are collected in centrifugal thread hold- 20; 3ere ac teeth on t ring 30 s a o ers, one type of which is called buckets, re which may conveniently be of electric or other volving at high'speed, a cake containing several yp un d on s 32 is a Speed-reduction thousand yards of yarn is formed. These cakes. 4 are gears nn in h m tor with 15 after the usual desuliuring and purification, conhe speed-r ductio ea 35 is a p on dr ven by tain relatively large volumes of liquid which must the m tor throu h th sp du t a nbe removed. It is economically expedient to remesh-with annular rack 23; 36 is a switch for move as much of the liquid as possible from the tartin r st ppin th m r 30: 0 are usa s cake by mechanical means before completing the mounted on the base of the machine; 41 are the 20.

drying by the action of hot gases. power supply for the bus bars; 42 are motors An object of this invention is to mechanically unt d on t u nta 3 a supp rts d remove liquid from bucket cakes. Another object din m th tu nta below a h r; 4 of this invention is a centrifugal wrin ing aare contacts mounted on supports 43 for contact- 2 chine. Another object of the invention is to proing with h us a s and supply p w r t t vide a continuous process for wringing liquid rs 2; 50 a spind s p j i r t from cakes of yarn and to provide a machine motors Wi hi h h in 1 1 r buckets which will centrifuge cakes more efficiently, more mounted. Within housing 0n Spindles 0; 52 uniformly, and with less effort on the part of the are inserts (which may ay not'be removable) operator. in the bucket walls for a purpose to be herein- 30 The objects of our invention are accomplished, after described; 53 in Figure 1 is a cake of thread, generally speaking, by revolving a number of such as regenerated cellulose thread, which has trifugal buckets about a common center, by robeen Produced by the bucket p g P 60 tating each bucket about its own axis during at are brake d m u d on ea motor p least a, portion of each revoluti n, a d b pref- 61 is a brake for contact with the brake drum; 62 35 erably, stopping each bucket during a portion of s a collar adjustably moun d on a a 1 3 each revolution. The objects of the invention are Curved p in cross Section. removalso accomplished by the method which consists ably m unt on lla s 6 64 a studs p l in arranging a number of individual buckets so ing fI'Om the b e 6 through the member 65 as to be automatically" moved past the operator are Springs between b a e 61 a d member 63; 6 40 and to be automatically started and stopped in indicates the bending f t e d of t b e a manner to facilitate the treatment and han- 150 ensure th o act Wit bra d umv dling of the centrifuged object. The objects of Our invention functions as follows:

the invention are also accomplished by the The switch 36 is thrown, starting the motor 30,

method and by the details of construction of the which, through the reduction riv pin n 45 machine hereinafter described. 35 which, meshing withrack 23, drives the turn- In the accompanying drawings Figure 1 is a table. Mounted on the turntable are a number vertical section through a machine embodying of motors carrying buckets. These motors get our invention; Figure 2 is a plan view, with a their power by contact with bus bars which may part broken away, of the same machine; Figure 3 r be mounted on the frame. The bus bars do not so a is a detailed view of the brake; Figure 4 is a plan completely encircle the; frame but extend about ,view of a bucket; Figures 5 and 6 are sections on a sufficient part of the periphery of the frame to the lines V-V, VI-VI, respectively of Figure 3. ensure the proper wringing of the bucket cake.-

Of the numerals on the drawings, 10 indicates As the turntable slowly revolves, the buckets are an approximately circular frame of pedestal driven at high speed so long as the contacts are 55 neeeasa connected to the bus bars. As soon as the contacts have left the bus bars the brake drums 60 on the motor spindles come in contact with the brake 61, which is spring-pressed against them and stops them from rotating. A portion of the top 151 of housing is cut away at a portion of the machine called the operators position. Buckets coming into the operators position will have been stopped by the brake and will not rotate until they have left the open section of the housing and the contacts 44 have connected them again with the bus bars.

The turntable is rotated at a speed which employs the entire time of the operator, for example, such that a bucket will pass the operator about every four seconds. As the buckets pass his position, the operator removes wrung cakes from the buckets and inserts wet cakes in their places.

The invention has been described in its ap plication to a machine to be operated by one man. It is possible, however, to make the machine considerably larger and have a number of operators spaced equally about it, the entire wringing operation being performed between the positions of adjacent operators.

The buckets are provided with inserts 52 which are preferably fiat and which act as wedges to slightly compress the cake and prevent it from turning in the bucket as the bucket accelerates and decelerates. any convenient way, as by holes through the sides, and the housing is drained by pipes '70 and/or by standards 14 and tubes 141.

The bucket motors may be on the same circuit or may be on a different circuit than the motor which drives the turntable.

The brake may be adjusted to an increased or decreased pressure on the brake drums by adjusting the lock nuts on studs 64.

If desired, the interior of the housing may be.

heated, as by the introduction and withdrawal of hot, dry air, adding to the drying eifect of the centrifugal wringing and completing, or not, in one action the entire drying of the thread.

It is preferred to wrap each cake with a cheesecloth or with some other open-mesh fabric such as is described in Patent 1,678,702 to E. K. Gladding before wringing, but this step may be omitted whenever such omission proves desirable.

By means of our invention it is possible to wring a cake more quickly, uniformly, and efficiently than has heretofore been possible. This represents a considerable saving in washing time and labor. The cakes are well wrung and are absolutely undamaged, and yield a valuable increase in the quality and quantity of usable yarn obtained from a given amount of raw, freshly spun yarn..

Another advantage of our invention is in the production of packages having small and uniform moisture content, which hold their shape well after leaving the drier and which unwind without substantial waste in subsequent textile operations. The cake, being firm, holds its shape and can be sent to a subsequen't'drying or treating operation without the use of an insert. This eliminates a step from the technical process and enables quicker andmore uniform processing.

As many apparently widely different embodiments of this invention may be made without departing from the spirit and scope, it is to be understood that we do not limit ourselves to the specific embodiments thereof except as defined in the appended claims.

We claim:

1. In a wringing machine a frame, a turntable mounted thereon, motors mounted peripherally of the turntable, centrifugal thread holder mounted on the motors, a housing'carried by the frame and enclosing the centrifugal thread holder, bus bars carried by and partially encircling the frame, contacts on the turntable for connecting the motors with the bus bars, brake drums on the motor spindles, a brake mounted on the frame for resilient contact with the brake drum of each motor after the contact of themotor with the bus bars The buckets may be drained in is broken.

2. In a wringing machine a turntable, motors mounted peripherally thereof, a centrifugal thread I holder having drainage mounted on each motor, means for rotating the turntable, means for driving each centrifugal thread holder motor during a portion of each revolution of the turntable, a brake drum on each motor spindle, a brake mounted on the frame in a position to engage the brake drum of each motor after the driving of the motor has stopped and a drained housing enclosing the centrifugal thread holder while they are rotating.

3. In a wringing machine a turntable, centrifugal thread holder having drainage mounted thereon, means for rotating the turntable, means for driving each centrifugal thread holder during a portion of each revolution of the turntable, means for braking each centrifugal thread holder after the driving of the centrifugal thread holder has stopped, and a drained housing enclosing the centrifugal thread holder'while they are rotating.

4. In a machine a centrifugal thread holder, means for revolving the centrifugal thread holder about a center outside itself, and means for rotating the centrifugal thread holder during a portion of each revolution and for stopping the centrifugal thread holder during a portion of each revolution.

5. In a centrifugal machine centrifugal thread holder supporting means, centrifugal thread holders mounted thereon, means for moving the supporting means in a closed path, means for rotating each thread holder at high speed during a portion of each circuit, and means for reducing the speed of each thread holder during a portion of each circuit to permit serving the thread holder.

6. In a wringing machine a frame, a turntable mounted thereon, motors mounted peripherally of the turntable, centrifugal thread holder mounted on the motors, a housing carried by the frame and enclosing the centrifugal thread holder. bus bars carried by and partially encircling the frame, contacts on the turntable for connecting the motors with the bus bars, and means for reducing the speed of the centrifugal thread holder while the centrifugal thread holder motor is unconnected to the bus bars.

7. A circular centrifugal thread holder having a flat portion in its thread contacting wall to'prevent relative movement of holder contents and holder, the edges, of the said portion being flush 

